update ReadMe for maven

ReadMe.md

@@ -30,7 +30,13 @@ Then, you need to run
 
     ant -f build.xml
     
-which will build the binaries of the comppiler and put them into the 'dist' directory.
+which will build the binaries of the compiler and put them into the 'dist' directory.
+
+Maven distribution is built separately, run
+
+    mvn package
+
+from 'libraries' directory after building the compiler.
 
 ## Working with the project in IDEA
 

libraries/ReadMe.md

@@ -4,6 +4,8 @@ This area of the project is all written in Kotlin and assumes you've got the [Ko
 
 This area of the project uses Maven for its build. To build install a recent [Maven](http://maven.apache.org/) distribution then type:
 
-    mvn install
+    mvn package
 
 For more details see the [Getting Started Guide](http://confluence.jetbrains.net/display/Kotlin/Getting+Started)
+
+Be sure to build Kotlin compiler before lauching Maven: see ReadMe.md at root level, section "Building"